doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/cmd/cramfs.c b/cmd/cramfs.c
index d79292b..2aad50c 100644
--- a/cmd/cramfs.c
+++ b/cmd/cramfs.c
@@ -92,7 +92,7 @@
  * @param flag command flag
  * @param argc number of arguments supplied to the command
  * @param argv arguments list
- * @return 0 on success, 1 otherwise
+ * Return: 0 on success, 1 otherwise
  */
 int do_cramfs_load(struct cmd_tbl *cmdtp, int flag, int argc,
 		   char *const argv[])
@@ -161,7 +161,7 @@
  * @param flag command flag
  * @param argc number of arguments supplied to the command
  * @param argv arguments list
- * @return 0 on success, 1 otherwise
+ * Return: 0 on success, 1 otherwise
  */
 int do_cramfs_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {